Your eye studies are improving, but there’s still a lot that can improve imho:
[ol]
[li]skintones: grey skin? more for zombies than humans. Either go 100% greyscale in your studies or 100% color. The grey skintone with the yellow highlights make them look very alien.[/li][li]put some work in the eyelashes.[/li][li]the brows look too solid. some skin should be visible here and there underneath them.[/li][li]be sure not to make the iris too small ;)[/li][/ol]Some stuff is quite good too:
[ol]
[li]the overall shape of the eye looks much more human now.[/li][li]you use a nice range of tones.[/li][li]keep it up![/li][/ol]
